Home / 9,319.36-12,860.16-5,340.28

Finding the Fourth Proportional to 9,319.36, 12,860.16 and 5,340.28

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Solution

The fourth proportional to 9,319.36, 12,860.16 and 5,340.28 is: 7,369.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.36 : 12,860.16 = 5,340.28 : x
  2. Step 2: Convert to fraction form
    9,319.36/12,860.16 = 5,340.28/x
  3. Step 3: Cross multiply
    9,319.36x = 12,860.16 × 5,340.28
  4. Step 4: Simplify right side
    9,319.36x = 68,676,855.24
  5. Step 5: Solve for x
    x = 68,676,855.24/9,319.36
  6. Step 6: Final answer
    x = 7,369.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.